You can find Kosher foods in any supermarket, I'm sure you'll find in Greenwich. There are several designations for Kosher foods, the most common being OU. You can search for OU products and brands here: http://www.oukosher.org/index.php/con...

A popular and common Kosher cheese is Miller's. I see that at most supermarkets in Northern Westchester. Also, I know offhand Stonyfield Farm yogurt is Kosher.

The big stop & shop in Stamford (Ridgeway, not the new one off of exit 6) seems to have a very large kosher section, as does the shop rite off exit 6. But I can't say I've ever paid attention to the snack options!

I was about to mention that there is a good discussion on the kosher board about which common snacks are kosher... then I realized it was your thread!

The vast majority of kosher foods in your average supermarket are not specialty products, found exclusively in the section labeled 'kosher'. I keep kosher strictly, and almost never buy anything other than meat products or cheese from kosher sections, kosher stores, etc. You don't need a special kosher market, as any American market has tons of kosher foods scattered throughout the store - you need to know the symbols, which other people have discussed in other threads you've created on this topic. Once you get used to shopping this way, you'll know what you can eat without inspecting the packages each time.

I noticed when I was at the Stop & Shop in the Ridgeway shopping center in Stamford that they have a very large kosher section and a fair amount of specialty kosher snacks. So, in case you haven't found what you are looking for among the standard snacks (many of which are kosher), you may want to check it out.